Package org.jastronomy.jsofa
Class JSOFA.TangentPlaneCoordinate
java.lang.Object
org.jastronomy.jsofa.JSOFA.TangentPlaneCoordinate
- Enclosing class:
JSOFA
Tangent Plane Position consisting of (xi, eta) pairs in radians.
Notes:
- The tangent plane projection is also called the "gnomonic projection" and the "central projection".
- The eta axis points due north in the adopted coordinate system. If the spherical coordinates are observed (RA,Dec), the tangent plane coordinates (xi,eta) are conventionally called the "standard coordinates". For right-handed spherical coordinates, (xi,eta) are also right-handed. The units of (xi,eta) are, effectively, radians at the tangent point.
- Since:
- JSOFA release 20180130
- Author:
- Paul Harrison (paul.harrison@manchester.ac.uk)
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
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Field Details
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xi
public double xi -
eta
public double eta -
status
public int statusstatus. 0 = OK 1 = star too far from axis 2 = antistar on tangent plane 3 = antistar too far from axis
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Constructor Details
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TangentPlaneCoordinate
public TangentPlaneCoordinate(double xi, double eta, int j)
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